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Traditionally ANZAC day marked the date on which growers in Western Australia would start dry seeding.
This page contains information on the optimum sowing windows to maximise grain yield of canola, for 24 locations, three soil types and three canola cultivars, obtained from the APSIM-Canola model a
Yield was highest from earlier sown plants; mid-May sown plants yielded only 18% of those sown in mid-April.
How late is too late to sow canola? What is the yield penalty from time of sowing (TOS) or late sowing? What is the estimated yield loss from delayed sowing of canola in WA?
Early sowing is the key to maximising canola yield in the northern region;
Delaying sowing by 15 days after 31 March led to 195kg/ha less yield – a loss of 13kg/ha/day
Canola yields were above 2.5t/ha from low plant density (10 plants per square metre).
Spacing plants more evenly did affect some aspects of plants growth.
Even when sowing in April into drying soil, sowing canola at 1cm produced higher establishment than sowing at 3cm or 7cm.
Growers in the Lake Grace area have received the latest agronomy advice and viewed trials conducted by Department of Primary Industries and Regional Development and ConsultAg at a field walk held t
In the trial series at Grass Patch, Ballidu, Merredin and Holt Rock, the highest grain yields, oil and gross margins were from the open pollinated variety, so growers should continue to use open po